<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style>
	*{
		text-align:center;
	  }
	#img01{
		width:700px;
		height:200px;
		background-color: #F00;
		float:left;
		margin-bottom:20px;
		}
	#img02{
		width:100px;
		height:200px;
		background-color: #906;
		float:left;
		margin-left:10px;
		margin-right:20px;
		}
	#img03{
		width:100px;
		height:200px;
		background-color: #00F;
		float:left;
		margin-left:20px;
		margin-right:20px;
		}
	#img04{
		width:500px;
		height:200px;
		background-color: #FF0;
		float: left;
		margin-right:10px;
		margin-top:20px;
		}
	#father{
		margin:auto;
		width:700px;
		}			
</style>
</head>

<body>

<div id="father">
    <div id="img01">我不动</div> 
    <div id="img02">我往右漂浮</div>
    <div id="img03">我往左漂浮</div>
    <div id="img04">底部</div>
</div> 
</center>       
</body>
</html>
